CN102674782A - Method for preparing concrete by using basalt micropowder-slag micropowder-limestone powder as blending material - Google Patents
Method for preparing concrete by using basalt micropowder-slag micropowder-limestone powder as blending material Download PDFInfo
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- CN102674782A CN102674782A CN201210166385XA CN201210166385A CN102674782A CN 102674782 A CN102674782 A CN 102674782A CN 201210166385X A CN201210166385X A CN 201210166385XA CN 201210166385 A CN201210166385 A CN 201210166385A CN 102674782 A CN102674782 A CN 102674782A
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- 239000000463 material Substances 0.000 title claims abstract description 49
- 239000002893 slag Substances 0.000 title claims abstract description 48
- 239000004567 concrete Substances 0.000 title claims abstract description 42
- 239000000843 powder Substances 0.000 title claims abstract description 32
- 239000006028 limestone Substances 0.000 title claims abstract description 30
- 238000002156 mixing Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000004568 cement Substances 0.000 claims abstract description 24
- 235000019738 Limestone Nutrition 0.000 claims abstract description 22
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 17
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 15
- 239000003595 mist Substances 0.000 claims description 15
- 239000004576 sand Substances 0.000 claims description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 238000007580 dry-mixing Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 159000000000 sodium salts Chemical class 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 3
- 239000012190 activator Substances 0.000 claims description 2
- 239000012467 final product Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000000654 additive Substances 0.000 abstract description 3
- 230000003628 erosive effect Effects 0.000 abstract description 2
- 239000013535 sea water Substances 0.000 abstract description 2
- 239000012615 aggregate Substances 0.000 abstract 2
- -1 basalt micropowder Substances 0.000 abstract 1
- 238000013329 compounding Methods 0.000 abstract 1
- 230000008014 freezing Effects 0.000 abstract 1
- 238000007710 freezing Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 9
- 238000007906 compression Methods 0.000 description 9
- 239000004574 high-performance concrete Substances 0.000 description 8
- 230000008901 benefit Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 235000013339 cereals Nutrition 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 239000010881 fly ash Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
The invention discloses a method for preparing concrete by using basalt micropowder-slag micropowder-limestone powder as a blending material. The method is characterized in that (1), raw materials consist of a gelatinizing material, an exciting agent, aggregate, additives and water, wherein the gelatinizing material is formed by compounding cement, basalt micropowder, slag micropowder and limestone powder; and the additives comprise an alkaline exciting agent and a high-efficiency water-reducing agent; (2), the specific surface area of the basalt micropowder, the slag micropowder and the limestone powder is controlled to be 400 to 600 m<2>/kg, 500 to 800 m<2>/kg and 600 to 900 m<2>/kg respectively; (3), small-size continuous grading coarse aggregate is adopted; and (4), the exciting agent is dissolved into water in advance and is mixed with the mixing water. By the method, the process is simple; concrete of C20-C60 grade can be prepared; the adding amount of industrial residues in the concrete can be increased obviously; the concrete has high work performing; and durability such as shrinkage resistance, freezing resistance, seawater erosion resistance and the like is improved obviously.
Description
Technical field
The invention belongs to building material technical field, particularly a kind of method of utilizing Irish touchstone micro mist-slag micropowder-limestone powder complex slag to prepare high performance concrete as adulterant.
Background technology
Along with the high stratification of modern building, harshization of striding, lightness, undergroundization and environment for use greatly; Concrete increasing demand to works fine property, HS, high-durability increases, and high performance concrete becomes the problem that the scientific worker competitively studies.In recent years, the research emphasis of high performance concrete concentrates on several aspects such as use of The Concrete Structure Design, low water-cement ratio, active mineral fine mineral admixture and efficient additive.Therefore, utilizing industrial residue, natural mineral or complex slag is one of effective means that realizes high-performance concrete as concrete admixture.
At present; Solid industrial residues such as the annual slag that produces of industry, slag, flyash, coal gangue, red mud, mine tailing such as the whole nation ferrous metallurgy, the energy, coloured, mine amount to 1,800,000,000 tons; But comprehensive utilization ratio is merely 55.7%, and a large amount of solid trade refuses still fails to be utilized effectively.Therefore, how to realize innoxious, the minimizing and the resource utilization of solid waste, become the key of developing the economy and protecting environment.The most frequently used adulterant has ground slag, flyash, silicon ash etc. in the concrete at present.
Irish touchstone belongs to the ejection lava in the subsiliceous rock magmatic rock, is generated at the lip-deep main magma of the earth's crust by stream, and chemical constitution is with SiO
2, Al
2O
3Be main, SiO wherein
2Content can reach more than 40%, Al
2O
3Be about 15%, other has CaO, Fe
2O
3And a small amount of MgO and R
2O (K
2O+Na
2O) etc.Possess and have wear-resisting, advantages such as draft amount is few, poor electric conductivity, crushing resistance is strong, crush values is low, erosion resistance is strong, asphalt adhesion.Be the higher material of a kind of lateral reactivity, the same with slag, flyash equal industrial residue, have the value of application and development.At present China mainly concentrates in concrete research basalt powder and Irish touchstone high temperature is processed fiber mixes concrete later on, but its cost is higher, seldom utilization in the present actual engineering.The Irish touchstone correlative study that is used for cement mixture also only rests on the preliminary study stage.
Slag is meant blast furnace ironmaking fused slag when quenching, has little time crystallization and the glass state material that forms.Be fine-grannular.The fused slag flows directly into that refrigerative is water-granulated slag again in the pond; Be commonly called as grain slag; The every production 1t of iron and steel enterprise molten iron produces about 0. 2t of slag; Slag is finely ground to the cement consumption in powder equivalent substitution various uses concrete and the cement products, can significantly improve the over-all properties of concrete and cement products.Slag micropowder has the advantage of improving the various performances of concrete as the novel adulterant of high performance concrete, can effectively improve the anti-seawater etch performance of cement concrete as cement for construction in sea.Discovering that in recent decades slag has the mineral constituent similar with cement, can be used as secondary resource and be used again not only have good social benefit, also having huge economic benefit simultaneously.
When China's production Wingdale rubble, machine-processed sand etc. gather materials, a large amount of aggregate chips, stone flour have been produced.With aggregate chips for sand, mix certain limestone powder and can improve concrete each item performance, but non-quantitative, unconfined use must bring detrimentally affect to its intensity, workability and endurance quality.It shows as that the concrete unit consumption of water is big, intensity is low, workability and endurance quality are poor.Effectively utilize limestone powder in order to reach, research has purpose to reach, efficiently utilizes limestone powder with concrete each item performance of limestone powder as adulterant.If when improving concrete intensity, application property and weather resistance, realize effective utilization of limestone powder, with realizing the good economic benefit and the combination of environmental benefit.
At present also be not prepared into the correlative study report that concrete admixture is used for high performance concrete with Irish touchstone micro mist, slag micropowder and limestone powder are compound.
Summary of the invention
The object of the invention utilize exactly a kind of with Irish touchstone micro mist, slag micropowder and limestone powder be main raw material as concrete admixture, this adulterant can utilize natural basalt and Wingdale in a large number.And can be under admixture (high efficiency water reducing agent and exciting agent) effect, through cooperate, prepare the concrete that satisfies the respective standard requirement with other sandstone material.
Concrete steps are:
(1) raw material by gelling material, gather materials, admixture and mixing water form; Gelling material, gather materials and the mass percent of mixing water is respectively 15% ~ 25%, 65% ~ 75% and 5% ~ 10%; Wherein the gelling material mass percent is: cement 40% ~ 50%, Irish touchstone micro mist 30% ~ 35%, slag micropowder 10% ~ 20%, limestone powder 5% ~ 10%; The part of gathering materials: the coarse aggregate grating is continuous, particle diameter 5 ~ 30mm, wherein 5 ~ 10mm: mass percent is 15% ~ 45%; 10 ~ 20mm: mass percent is 40% ~ 70%; 20 ~ 30mm: mass percent is 10% ~ 15%; The fine aggregate fineness modulus is 2.5 ~ 3.0, and sand coarse aggregate ratio is 32% ~ 40%; Admixture is alkali-activator and high efficiency water reducing agent, and exciting agent is 1% ~ 5% of a gelling material mass percent; Water reducer is 1.5% ~ 3% of a gelling material mass percent, and water-cement ratio is 0.30 ~ 0.50;
(2) with Irish touchstone, slag and Wingdale dry to water ratio less than 1%, put into ball mill respectively grinding to specific surface area 400 ~ 600 ㎡/㎏, 500 ~ 800 ㎡/㎏ and 600 ~ 900 ㎡/㎏, obtain Irish touchstone micro mist, slag micropowder and limestone powder;
(3) with Irish touchstone micro mist, slag micropowder and the limestone powder of cement and step (2) gained set by step (1) mixed evenly obtain gelling material;
(4) exciting agent and water reducer are successively joined in the mixing water, and mix and obtain mix solution;
(5) earlier step (1) grating and water ratio are poured in the forced mixer less than 1% rubble; The gelling material that again step (3) is prepared is poured into, step (1) fineness modulus and water ratio is poured into less than 1% fine aggregate carried out dry mixing 60 seconds in the stirrer then;
(6) the mix solution that in whipping process, step (4) is prepared slowly joins in step (5) the gained siccative, and stir after 180 ~ 240 seconds and shut down, the preparation moulding, 20 ± 2 ℃ of temperature, maintenance gets final product under humidity 90 ± 5% environment;
Said exciting agent is KOH, NaOH, Ca (OH)
2, K
2SO
4, Na
2SO
4And CaSO
4In one or both;
Said water reducer is a NSOb-naphthalenesulfonateformaldehyde formaldehyde high-shrinkage thing sodium salt.
The invention has the beneficial effects as follows:
(1) can utilize Irish touchstone, slag and Wingdale to prepare concrete admixture in a large number, incorporation 20% ~ 35%, 10% ~ 20% and 5% ~ 10%, improves environment respectively, reduces and pollutes, and economizes on resources;
(2) the complete National standard of concrete strength of preparation, intensity satisfies each class requirement of C20 ~ C60, and its resistance to fouling, frost resistance, endurance qualities such as shrinkability are all good, meet the requirement of high performance concrete;
(3) technology of preparing is simple, and cost is low, has also reduced the concrete production cost simultaneously.
Embodiment
Embodiment 1:
(1) gelling material, gather materials and the mass percent of mixing water is respectively 19.5%, 72% and 8.5%; Wherein the mass percent of gelling material is: cement 50%, Irish touchstone micro mist 35%, slag micropowder 10%, limestone powder 5%; The coarse aggregate mass percent is: 5～10mm:30%; 10～20mm:55%; 20～30mm:15%; Fine aggregate: the grain fineness number modulus is 2.6; Exciting agent CP Na
2SO
4Be 3% of gelling material mass percent, water reducer NSOb-naphthalenesulfonateformaldehyde formaldehyde high-shrinkage thing sodium salt is 1.5% of a gelling material mass percent, and water-cement ratio adopts 0.44, and sand coarse aggregate ratio adopts 36%;
(2) with Irish touchstone, slag and Wingdale dry to water ratio less than 1%, put into ball mill respectively grinding to specific surface area be 450 ㎡/㎏, 550 ㎡/㎏ and 600 ㎡/㎏, obtain Irish touchstone micro mist, slag micropowder and limestone powder;
(3) with step (2) gained cement, Irish touchstone micro mist, slag micropowder and limestone powder set by step (1) mixed evenly obtain gelling material;
(4) exciting agent and water reducer are successively joined in the mixing water, mix and obtain mix solution;
(5) earlier rubble is poured in the forced mixer, the gelling material that again step (3) is prepared is poured into, fine aggregate is poured into carried out dry mixing 60 seconds in the stirrer then;
(6) the mix solution that in whipping process, step (4) is prepared slowly joins in step (5) the gained siccative; Stir after 180 seconds and shut down, pour out the concrete of the system of mixing, survey its serviceability; And making moulding; With form removal behind the concrete sample 24h of forming, 20 ± 2 ℃ of temperature, maintenance is 28 days under the environment of humidity 90 ± 5%.
The intensity of the concrete sample of surveying is respectively: 3d ultimate compression strength 33.5MPa; 7d ultimate compression strength 37.65MPa; 28d ultimate compression strength 45.3MPa.
Embodiment 2:
(1) gelling material, gather materials and the mass percent of water is respectively 21.5%, 70.7% and 7.8%; Wherein the per-cent of gelling material is: cement 40%, Irish touchstone micro mist 30%, slag micropowder 20%, limestone powder 10%; The coarse aggregate mass percent is: 5～10mm:35%; 10～20mm:55%; 20～30mm:10%; Fine aggregate: the grain fineness number modulus is 2.7; Exciting agent CP Na
2SO
4Be 3% of gelling material mass percent, water reducer NSOb-naphthalenesulfonateformaldehyde formaldehyde high-shrinkage thing sodium salt is 2% of a gelling material mass percent, and water-cement ratio adopts 0.36, and sand coarse aggregate ratio adopts 32%;
(2) with Irish touchstone, slag and Wingdale dry to water ratio less than 1%, put into ball mill respectively grinding to specific surface area be 500 ㎡/㎏, 600 ㎡/㎏ and 720 ㎡/㎏;
(3) with step (2) gained cement, Irish touchstone micro mist, slag micropowder and limestone powder set by step (1) mixed evenly obtain gelling material;
(4) exciting agent and water reducer are successively joined in the mixing water, mix and obtain mix solution;
(5) earlier rubble is poured in the forced mixer, the gelling material that again step (3) is prepared is poured into, fine aggregate is poured into carried out dry mixing 60 seconds in the stirrer then;
(6) the mix solution that in whipping process, step (4) is prepared slowly joins in step (5) the gained siccative; Stir after 240 seconds and shut down, pour out the concrete of the system of mixing, survey its serviceability; And making moulding; With form removal behind the concrete sample 24h of forming, 20 ± 2 ℃ of temperature, maintenance is 56 days under the environment of humidity 90 ± 5%.
The intensity of the concrete sample of surveying is respectively: 3d ultimate compression strength 43.6MPa; 7d ultimate compression strength 49.65MPa; 28d ultimate compression strength 58.3.7MPa.
More than two routine slump all about 180mm, workability is good, loss of slump is little, no excreting water phenomenon.Can find out that through proportioning Irish touchstone micro mist-slag micropowder-limestone powder complex slag adulterant volume satisfies the requirement of strength of C35 and C45 fully at 50% ~ 60% o'clock prepared concrete crushing strength.
Embodiment 3:
(1) gelling material, gather materials and the mass percent of water is respectively 24.2%, 66.1% and 9.7%; Wherein the per-cent of gelling material is: cement 40%, Irish touchstone micro mist 30%, slag micropowder 20%, limestone powder 10%; The coarse aggregate mass percent is: 5～10mm:45%; 10～20mm:45%; 20～30mm:10%; Fine aggregate: the grain fineness number modulus is 2.8; Exciting agent CP Na
2SO
4Be 3% of gelling material mass percent, water reducer NSOb-naphthalenesulfonateformaldehyde formaldehyde high-shrinkage thing sodium salt is 2.5% of a gelling material mass percent, and water-cement ratio adopts 0.40, and sand coarse aggregate ratio adopts 40%;
(2) with Irish touchstone, slag and Wingdale dry to water ratio less than 1%, put into ball mill respectively grinding to specific surface area be 520 ㎡/㎏, 610 ㎡/㎏ and 800 ㎡/㎏;
(3) with step (2) gained cement, Irish touchstone micro mist, slag micropowder and limestone powder set by step (1) mixed evenly obtain gelling material;
(4) exciting agent and water reducer are successively joined in the mixing water, mix and obtain mix solution;
(5) earlier rubble is poured in the forced mixer, the gelling material that again step (3) is prepared is poured into, fine aggregate is poured into carried out dry mixing 60 seconds in the stirrer then;
(6) the mix solution that in whipping process, step (4) is prepared slowly joins in step (5) the gained siccative, stirs after 240 seconds and shuts down, and pours out the concrete of the system of mixing; Survey its serviceability; And the making moulding, the slump 170mm that is prepared, workability is good; Loss of slump is little, no excreting water phenomenon.With form removal behind the concrete sample 24h of forming, 20 ± 2 ℃ of temperature, maintenance is 28 days under the environment of humidity 90 ± 5%.
The intensity of the concrete sample of surveying is respectively: 3d ultimate compression strength 48.6MPa; 7d ultimate compression strength 59.3MPa; 28d ultimate compression strength 71.4MPa.In carrying out concrete anti-contracility, frost resistance, anti-marine denudation property test, draw Irish touchstone micro mist-slag micropowder-limestone powder durability of HPC with high and all be higher than normal concrete.
This example explanation utilizes the concrete of Irish touchstone micro mist-slag micropowder-limestone powder complex slag adulterant preparation can satisfy the requirement of strength of C60.
Claims (1)
1. one kind prepares concrete method with Irish touchstone micro mist-slag micropowder-limestone powder as adulterant, it is characterized in that concrete steps are:
(1) raw material by gelling material, gather materials, admixture and mixing water form; Gelling material, gather materials and the mass percent of mixing water is respectively 15% ~ 25% 65% ~ 75% and 5% ~ 10%; Wherein the gelling material mass percent is: cement 40% ~ 50%, Irish touchstone micro mist 30% ~ 35%, slag micropowder 10% ~ 20%, limestone powder 5% ~ 10%; The part of gathering materials: the coarse aggregate grating is continuous, particle diameter 5 ~ 30mm, wherein 5 ~ 10mm: mass percent is 15% ~ 45%; 10 ~ 20mm: mass percent is 40% ~ 70%; 20 ~ 30mm: mass percent is 10% ~ 15%; The fine aggregate fineness modulus is 2.5 ~ 3.0, and sand coarse aggregate ratio is 32% ~ 40%; Admixture is alkali-activator and high efficiency water reducing agent, and exciting agent is 1% ~ 5% of a gelling material mass percent, and water reducer is 1% ~ 3% of a gelling material mass percent, and water-cement ratio is 0.30 ~ 0.50;
(2) with Irish touchstone, slag and Wingdale dry to water ratio less than 1%, put into ball mill respectively grinding to specific surface area 400 ~ 600 ㎡/㎏, 500 ~ 800 ㎡/㎏ and 600 ~ 900 ㎡/㎏, obtain Irish touchstone micro mist, slag micropowder and limestone powder;
(3) with Irish touchstone micro mist, slag micropowder and the limestone powder of cement and step (2) gained set by step (1) mixed evenly obtain gelling material;
(4) exciting agent and water reducer are successively joined in the mixing water, and mix and obtain mix solution;
(5) earlier step (1) grating and water ratio are poured in the forced mixer less than 1% rubble; The gelling material that again step (3) is prepared is poured into, step (1) fineness modulus and water ratio is poured into less than 1% fine aggregate carried out dry mixing 60 seconds in the stirrer then;
(6) the mix solution that in whipping process, step (4) is prepared slowly joins in step (5) the gained siccative, and stir after 180 ~ 240 seconds and shut down, the preparation moulding, 20 ± 2 ℃ of temperature, maintenance got final product in 28 days under humidity 90 ± 5% environment;
Said exciting agent is KOH, NaOH, Ca (OH)
2, K
2SO
4, Na
2SO
4And CaSO
4In one or both;
Said water reducer is a NSO b-naphthalenesulfonateformaldehyde formaldehyde high-shrinkage thing sodium salt.
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| CN104072028A (en) * | 2013-03-25 | 2014-10-01 | 中国矿业大学 | Method for preparing concrete from industrial waste residue fine aggregate |
| CN105601189A (en) * | 2015-12-24 | 2016-05-25 | 中国建筑材料科学研究总院 | Alkali-activated concrete and preparation method thereof |
| CN104844111B (en) * | 2015-04-30 | 2016-08-24 | 谭云松 | A kind of admixture and concrete prepared therefrom |
| CN110845168A (en) * | 2019-12-10 | 2020-02-28 | 徐州中联混凝土有限公司 | Active admixture, preparation method and application of active admixture and concrete |
| CN111196697A (en) * | 2020-01-14 | 2020-05-26 | 重庆砼磊混凝土有限公司 | Preparation method of superfine composite modified limestone chip concrete |
| CN113045264A (en) * | 2021-03-22 | 2021-06-29 | 浙江汇安工程质量检测有限公司 | Multifunctional environment-friendly mortar for optimizing modification of basalt admixture system and preparation method thereof |
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| CN103553454A (en) * | 2013-10-10 | 2014-02-05 | 桂林理工大学 | High performance concrete with steel slag as admixture and aggregate and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104072028A (en) * | 2013-03-25 | 2014-10-01 | 中国矿业大学 | Method for preparing concrete from industrial waste residue fine aggregate |
| CN104072028B (en) * | 2013-03-25 | 2016-06-01 | 中国矿业大学 | A kind of fine aggregate concrete batching method of industrial residue |
| CN104844111B (en) * | 2015-04-30 | 2016-08-24 | 谭云松 | A kind of admixture and concrete prepared therefrom |
| CN105601189A (en) * | 2015-12-24 | 2016-05-25 | 中国建筑材料科学研究总院 | Alkali-activated concrete and preparation method thereof |
| CN110845168A (en) * | 2019-12-10 | 2020-02-28 | 徐州中联混凝土有限公司 | Active admixture, preparation method and application of active admixture and concrete |
| CN111196697A (en) * | 2020-01-14 | 2020-05-26 | 重庆砼磊混凝土有限公司 | Preparation method of superfine composite modified limestone chip concrete |
| CN113045264A (en) * | 2021-03-22 | 2021-06-29 | 浙江汇安工程质量检测有限公司 | Multifunctional environment-friendly mortar for optimizing modification of basalt admixture system and preparation method thereof |
| CN116023098A (en) * | 2022-12-31 | 2023-04-28 | 四川省川铁枕梁工程有限公司 | Low-carbon high-durability concrete |
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